Effect of Equisetum arvense and Urtica piluifera plant extracts on growth of Leishmania tropica promastigotes In vitro

The poisnous effect of each Equisetum arvense and Urtica piluifera extracts dissolved in cold and hot water, on Leishmania tropica. The results revealed, that these extracts were studied has inhibitory effect on L. tropica promastigotes number, the number of L. tropica decreased gradually by using 0.1 to 2.5 mg/cm3 concentrations of these extracts. Moreover, the extracts effect on number and time of generation, indicated that the generation number decreased. And generation time, increased by the extracts during the treatment period, where IC50 values were 1.5 mg/cm3 of Equisetum arvense extract and 1 mg/cm3 of Urtica piluifera extract dissolved in cold and hot water during the log phase.